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Spatiotemporal evolution and driving mechanisms of vegetation photosynthesis dynamics in the Loess Plateau based on optimal parameter-based geographical detector
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Lian ZHOU1, 2, 3, Xia JIA2, 3, 4, Yong-hua ZHAO1, 2, 3, *, Peng ZHANG1, 2, 3, Ming ZHAO1, 2, 3, Shao-cheng SI1, 2, 3
China Environmental Science | 2026, 46(1) : 365 - 378
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China Environmental Science | 2026, 46(1): 365-378
• Environmental Ecology •
Spatiotemporal evolution and driving mechanisms of vegetation photosynthesis dynamics in the Loess Plateau based on optimal parameter-based geographical detector
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Lian ZHOU1, 2, 3, Xia JIA2, 3, 4, Yong-hua ZHAO1, 2, 3, *, Peng ZHANG1, 2, 3, Ming ZHAO1, 2, 3, Shao-cheng SI1, 2, 3
Affiliations
  • 1.School of Land Engineering, Chang'an University, Xi'an 710054, China
  • 2.Key Laboratory of Land Consolidation of Shaanxi Province, Xi'an 710054, China
  • 3.Key Laboratory of Degradation and Unused Land Remediation Engineering of the Ministry of Natural Resources, Xi'an 710054, China
  • 4.School of Water and Environment, Chang'an University, Xi'an 710054, China;
Published: 2026-01-20
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Based on the Global dataset of solar-induced chlorophyll fluorescence (GOSIF) and the Optimal Parameters-based Geographical Detector (OPGD) model, systematically analyzed the spatio-temporal patterns and driving mechanisms of vegetation photosynthesis on the Loess Plateau (LP) and its six ecological subregions from 2002 to 2022. The results indicated that: (1) On the temporal scale, the annual mean SIF across the LP region demonstrated significant growth with spatial heterogeneity. The hilly-gully region (Subregion B2) showed the highest increase rate[0.0024W/(m2·μm·sr·a)], while sandy and irrigated agricultural areas displayed the lowest [0.0006W/(m2·μm·sr·a)]. (2) On the spatial scale, the spatial distribution of annual SIF on the LP was significantly different, Notable degradation was observed in localized areas, particularly within the high-plain-gully Subregion A1 (central Qinghai Province) and the Guanzhong Plain. 11.36% of the region (southern rocky mountain and valley plain areas) exhibited SIF changes that deviated from the regional trend. (3) Anthropogenic factors dominated human activities and climate change exerted dual influences on vegetation photosynthetic evolution, with the former acting as the dominant driver and the latter governing spatial divergence. Precipitation primarily regulated SIF variations in the high-plain-gully Subregion A1, while solar radiation dominated the evolution in Subregion A2, hilly-gully regions, and rocky mountain-valley plain areas. Factor interactions synergistically amplified SIF spatial heterogeneity.

global dataset of solar-induced chlorophyll fluorescence (GOSIF)  /  optimal parameters-based geographical detector  /  Loess Plateau  /  ecological regionalization  /  vegetation photosynthetic dynamics
周连, 贾夏, 赵永华, 张鹏, 赵明, 司绍诚. 黄土高原植被光合动态的时空演变及驱动机制——基于参数最优地理探测器模型. 中国环境科学, 2026 , 46 (1) : 365 -378 .
Lian ZHOU, Xia JIA, Yong-hua ZHAO, Peng ZHANG, Ming ZHAO, Shao-cheng SI. Spatiotemporal evolution and driving mechanisms of vegetation photosynthesis dynamics in the Loess Plateau based on optimal parameter-based geographical detector[J]. China Environmental Science, 2026 , 46 (1) : 365 -378 .
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Year 2026 volume 46 Issue 1
64
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Article Info
  • Receive Date：2025-05-22
  • Online Date：2026-10-08
  • Published：2026-01-20
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  • Received：2025-05-22
Funding
Affiliations
    1.School of Land Engineering, Chang'an University, Xi'an 710054, China
    2.Key Laboratory of Land Consolidation of Shaanxi Province, Xi'an 710054, China
    3.Key Laboratory of Degradation and Unused Land Remediation Engineering of the Ministry of Natural Resources, Xi'an 710054, China
    4.School of Water and Environment, Chang'an University, Xi'an 710054, China;
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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